Rhipicephalus microplus is vector of Babesia bovis and Babesia bigemina causing extensive production losses. microplus has successfully competed and replaced the close related African blue tick, Rhipicephalus decoloratus. Rhipicephalus microplus has extended its distribution through the translocation of tick-infested cattle. The Asian blue tick, Rhipicephalus (Boophilus) microplus (Canestrini, 1888), is one of the most important tick species infesting livestock in many parts of the world. microplus in Uganda and also for how long this tick has been present on livestock without being noticed. Future surveys, but also retrospective surveys of museum specimens, will reveal the extent of distribution of R. There is currently no livestock movement policy in force in Uganda, which could possibly limit the further spread of R. decoloratus in the sampled villages in Kadungulu sub-county, since the latter was not any longer found in this area. microplus confirmed the morphological identification. Phylogenetic analysis of the 12S rRNA, 16S rRNA and ITS2 gene sequences of R. Other species found were Amblyomma variegatum (7.2 % n = 1377), Rhipicephalus evertsi (2.3 % n = 434 ) and R. The predominant tick species found on cattle was Rhipicephalus appendiculatus (86.9 % n = 16,509). microplus specimens were further processed for phylogenetic analysis and species confirmation. All the ticks collected from 240 cattle from six villages were identified microscopically. The study was carried out in Kadungulu, Serere district, south-eastern Uganda, which is dominated by small scale livestock producers. This study was carried out to update the national tick species distribution on livestock in Uganda as a basis for tick and tick-borne disease control, with particular reference to R. Although the tick was reported in Uganda 70 years ago, it has not been found in any subsequent surveys. The tick has spread from its native habitats on translocated livestock to large parts of the tropical world, where it has replaced some of the local populations of Rhipicephalus decoloratus ticks. Rhipicephalus microplus, an invasive tick species of Asian origin and the main vector of Babesia species, is considered one of the most widespread ectoparasites of livestock.
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